Home is closer to the place where the square dance is held, and the square dance sound is tuned to the 20th floor, which is quieter, and the sound is easily transmitted to the 20th floor. If the ground on the first floor of the ground is crowded and chaotic, you can not hear the sound of the square dance.
Square dance music size during the day can not exceed 55 decibels, can not exceed 45 decibels at night. National noise standards: residential ambient noise shall not exceed 55 decibels during the day, not more than 45 decibels at night.